The feed water system of the boilers is the component of the steam producing plant that circulates feed water from the cascade tank into the oil-fired auxiliary boiler and the exhaust gas boiler via the boiler feed water pumps and feed water regulators. The feed water regulating valve automatically controls the feed water flow to…
For a variety of reasons, ships rely on the seawater in which they move and one of the primary functions of seawater is to keep the engine and other sections of the ship cool while they are running. The utilized seawater is then discharged back into the sea, and additional seawater is taken in, resulting…
Sewage is defined as drainage and other wastes from any form of toilets or urinals, drainage from medical premises via wash basins, wash tubs and scuppers located in these premises, drainage from spaces containing live animals and other waste waters when mixed with drainages defined aforementioned. The sewage treatment plant is a biological unit, which…
A bilge system is a piping system installed onboard a vessel for the purpose of removing water that accumulates in enclosed spaces (holds, machinery spaces, cofferdams) as a result of condensation, leakage, washing, or fire fighting. It is also to be capable of controlling flooding in the Engine Room as a result of minimal piping…
Onboard vessel, in general, saturated steam is produced into the oil-fired boiler or the exhaust gas boiler. There are special type of systems, where steam is used for propulsion or electrical generation into the steam turbines. On these cases steam need to be superheated and at high pressure and steam generating systems are more complex…
The fresh water generator is an equipment installed onboard vessels which is used to produce fresh water from sea water. There are two major ways of producing fresh water onboard vessels: vacuum evaporation and reverse osmosis, of which the vacuum evaporation comprises of two types: tube type and plate type. Each system has its own…
The emergency diesel generator is a self contained diesel engine driven electrical generator set, which is located in a separated room with access from deck. Usually the generator is the self-excited, brushless type and can be set for manual or automatic operation. Auto will be normally selected, with the manual setting being used for testing…
The vessel air system comprises, normally, of Starting air system, Control air system and General service/working air system.The starting air system is supplied by two or three main air compressors which provide air, usually, to two main air reservoirs and is used to start the main engine and the generator engines. The generators may also…
Smoke detection systems are typically installed for cargo holds and work in conjunction with CO2 fire extinguishing systems. Additionally, hold sampling pipes are utilized to deliver CO2 into the cargo holds as needed and they are connected to three-way valves which are used to effectuate the changeover. Smoke detection panels are positioned in the CO2 chamber,…
Crankshaft is the main element of the motor mechanism and it sums up the rotational motion of all cylinders and transmits it to the consumers, which in the case of marine engine systems can be a propeller or a generator. For this reason, from a mechanical point of view, it has the higher load and…